<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>有序无序列表学习</title>
</head>

<body>

    <ol>
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
    </ol>

    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
    </ul>


    <dl>
        <dt>问问</dt>
        <dd>问问</dd>
    </dl>

</body>

</html>